Battery top cover assembly and battery

Abstract

This utility model relates to the field of battery technology, providing a battery top cover assembly and a battery. The battery top cover assembly includes: a top cover body; a first insulating member connected to a first side of the top cover body; a riveting block connected to the side of the first insulating member away from the top cover body; and a patch mechanism including a patch and release paper. One side of the patch has an adhesive backing, and the release paper is detachably connected to the adhesive-backed side of the patch. When the release paper is removed from the patch, the patch is adhered to the first side of the top cover body by the adhesive backing, and the patch extends and adheres to the edge of the first insulating member to cover the gap between the first insulating member and the top cover body. The battery top cover assembly provided by this utility model effectively isolates the adhesive backing of the patch from air and pollutants by ensuring a tight fit. At the same time, by extending and adhering the patch to the edge of the first insulating member, it avoids possible contact between the top cover body and the outside environment, significantly reducing the risk of battery short circuit.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery top cover assembly and a battery. Background Technology

[0002] In the field of battery manufacturing, the battery top cover assembly is a key structural component for achieving internal sealing, external electrical connection, safe pressure relief, and reliable insulation of the battery, directly affecting the battery's safety performance and long-term reliability.

[0003] There is an uncovered gap between the edge of the patch and the edge of the insulation component in the existing battery top cover assembly, resulting in direct exposure of some aluminum material in the top cover body (i.e., "exposed aluminum area"). This exposed area is highly likely to cause safety hazards during the production process. Furthermore, due to the extremely high adhesiveness of these patches, they cannot be smoothly handled, stored, and transported independently before being assembled into the battery top cover. Their adhesive surface easily attracts dust and foreign objects or is accidentally stuck together, leading to contamination, damage, or failure. Utility Model Content

[0004] This utility model provides a battery top cover assembly and a battery to solve the problem that there is an uncovered gap between the edge of the patch and the edge of the insulating component in the existing battery top cover assembly, and that the adhesive surface of the patch is very easy to attract dust, foreign objects or be accidentally stuck, resulting in pollution, damage or failure.

[0005] This utility model provides a battery top cover assembly, including:

[0006] Top cover body;

[0007] The first insulating element is connected to the first side of the top cover body;

[0008] A riveting block is attached to the side of the first insulating member away from the top cover body;

[0009] The patch assembly includes a patch and a release liner. One side of the patch has an adhesive backing, and the release liner is detachably attached to the side of the patch with the adhesive backing. When the release liner is removed from the patch, the patch is adhered to a first side of the top cover body by the adhesive backing, and the patch extends and is pasted to the edge of the first insulating member to cover the gap between the first insulating member and the top cover body.

[0010] According to the present invention, a battery top cover assembly is provided, wherein the patch includes a patch body and a skirt portion, the skirt portion protruding from the skirt portion of the top cover body, the release paper being adapted to the adhesive side of the patch body and the adhesive side of the skirt portion, and the release paper being detachably connected to the adhesive side of the patch body and the skirt portion.

[0011] When the release paper is removed from the patch body, the skirt portion is adhered to the edge of the first insulating member by the adhesive backing at the corresponding position.

[0012] According to the present invention, a battery top cover assembly includes a first folded edge and a second folded edge. The first folded edge and the second folded edge are set at an angle. The first folded edge is connected to the patch body through the second folded edge. The first folded edge is pasted to the edge of the first insulating member away from the top cover body by the backing adhesive at the corresponding position. The second folded edge is spaced apart from the first insulating member.

[0013] According to the present invention, a battery top cover assembly is provided, wherein the release paper has a tear handle protruding from the outer edge of the patch on at least one side.

[0014] According to the present invention, the thickness of the release paper is 0.05 mm to 0.5 mm.

[0015] According to the present invention, a battery top cover assembly is provided, wherein an explosion-proof hole is formed on the top cover body, and a vent hole corresponding to the position of the explosion-proof hole is formed on the patch, and the battery top cover assembly further includes an explosion-proof sheet disposed in the explosion-proof hole.

[0016] According to the present invention, a battery top cover assembly further includes: an explosion-proof film;

[0017] The explosion-proof membrane is disposed at one end outside the explosion-proof hole, and the explosion-proof sheet is disposed at one end inside the explosion-proof hole, forming an explosion-proof cavity between the explosion-proof sheet and the explosion-proof membrane.

[0018] According to the present invention, a battery top cover assembly is provided on the top cover body, a terminal hole is provided on the first insulating member, a first through hole is formed on the first insulating member opposite to the terminal hole, and a second through hole is formed on the riveting block opposite to the terminal hole.

[0019] The battery top cover assembly further includes: a terminal post, which passes through and is fixed in sequence in the second through hole, the terminal post hole and the second through hole.

[0020] According to the present invention, a battery top cover assembly further includes:

[0021] A sealing element is fitted onto the pole post and located between the pole post and the side wall of the first through hole, and / or between the pole post and the side wall of the pole post hole.

[0022] This utility model also provides a battery, comprising:

[0023] The battery includes a housing, a battery electrode assembly, and a battery top cover assembly, wherein the battery electrode assembly is located inside the housing and the battery top cover assembly is fixed to the opening of the housing.

[0024] The battery top cover assembly and battery provided by this utility model effectively isolate the adhesive backing from air and pollutants by ensuring a tight fit with the release paper. This allows the adhesive backing to maintain its stickiness to the maximum extent before final use (i.e., before the release paper is removed). Simultaneously, by extending and attaching the patch to the edge of the first insulating component, the "patch-insulator gap" present in traditional structures is completely covered, preventing potential contact between the top cover body and the outside environment. This fundamentally blocks the conductive path between the exposed aluminum area and the busbar caused by foreign metal objects (such as scattered metal wires), significantly reducing the risk of battery short circuits. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an existing battery.

[0027] Figure 2 This is a disassembly diagram of the battery top cover assembly provided by this utility model.

[0028] Figure 3 This is a schematic diagram of the patch provided by this utility model.

[0029] Figure 4 This is a front view of the battery top cover assembly provided by this utility model.

[0030] Figure 5 yes Figure 4 A schematic diagram of section AA.

[0031] Figure 6 This is the front view of the patch provided by this utility model.

[0032] Figure 7 yes Figure 6 A schematic diagram of the BB section.

[0033] Figure 8 This is a schematic diagram of the skirt edge of the patch provided by this utility model.

[0034] Figure 9 This is a schematic diagram of the battery structure provided by this utility model.

[0035] Figure label:

[0036] 1. Battery top cover assembly; 10. Release paper; 101. Tear handle; 11. Top cover body; 111. Terminal hole; 112. Explosion-proof hole; 12. First insulating component; 121. First through hole; 13. Riveting block; 131. Second through hole; 14. Patch; 141. Skirt; 1411. First folded edge; 1412. Second folded edge; 142. Vent hole; 143. Patch body; 15. Terminal; 16. Sealing component; 17. Explosion-proof sheet; 18. Explosion-proof film; 19. Second insulating component;

[0037] 2. Shell. Detailed Implementation

[0038] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0040] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Existing battery top cover assemblies, such as Figure 1 As shown, the main components include: a top cover body 11, a first insulating component 12, a riveting block 13, and a patch 14. An uncovered gap exists between the edge of the patch 14 and the edge of the first insulating component 12, resulting in direct exposure of a portion of the aluminum material in the top cover body 11 (i.e., an "exposed aluminum area"). This exposed area is highly susceptible to safety hazards during production. For example, during battery module assembly, flying metal wires or debris may overlap between the exposed aluminum area and adjacent conductive components (such as busbars), forming an unexpected conductive path; if the busbar comes into contact with the exposed aluminum area during installation, it will cause insulation failure between the top cover body 11 and the busbar, leading to a short circuit; the yield rate will decrease, requiring additional insulation testing and rework processes to mitigate risks and increase production costs. Furthermore, due to the adhesive backing of the patch 14, the patch 14 in the entire battery top cover assembly cannot be stored and transported separately. Directly assembling a patch 14 that has been stored for an extended period will directly affect the lifespan of the entire battery top cover assembly.

[0043] To address the aforementioned problems, this utility model provides a battery top cover assembly 1, such as... Figures 2 to 7 As shown, the battery top cover assembly 1 includes a top cover body 11, a first insulating member 12, a riveting block 13, and a patch mechanism. The first insulating member 12 is connected to a first side of the top cover body 11; the riveting block 13 is connected to the side of the first insulating member 12 away from the top cover body 11; the patch mechanism includes a patch 14 and release paper 10, one side of the patch 14 is provided with adhesive, and the release paper 10 is detachably connected to the side of the patch 14 with adhesive; when the release paper 10 is removed from the patch 14, the patch 14 is adhered to the first side of the top cover body 11 by the adhesive, and the patch 14 extends and is pasted to the edge of the first insulating member 12 to cover the gap between the first insulating member 12 and the top cover body 11.

[0044] Specifically, the top cover body 11 forms the foundation of the entire assembly and is typically made of aluminum plate. The battery top cover assembly 1 also includes a second insulating component 19. The first insulating component 12 is an upper plastic component disposed on the top surface of the top cover body 11. The second insulating component 19 is a lower plastic component disposed on the bottom surface of the top cover body 11. The first insulating component 12 and the second insulating component 19 comprehensively enhance the insulation performance of the battery top cover from both the top and bottom directions.

[0045] Before patch 14 is used, release paper 10 effectively isolates the adhesive from moisture, oxygen, and various contaminants in the air. This allows the adhesive to maintain its original tackiness to the greatest extent possible before final use, i.e., before the release paper 10 is removed. During actual production, storage, and transportation, this characteristic ensures that patch 14 maintains good adhesion during installation, providing a reliable guarantee for subsequent sealing and insulation effects.

[0046] When the patch 14 needs to be installed, simply remove the release paper 10 from the patch 14. The patch 14 can then be firmly attached to the first side of the top cover body 11 by means of the adhesive backing. The patch 14 can extend and adhere to the edge of the first insulator 12, thereby completely covering the "patch 14-insulator gap" that exists in the conventional structure, and completely eliminating this potential safety hazard area that may cause a short circuit.

[0047] The battery top cover assembly 1 provided by this utility model effectively isolates the adhesive backing of the patch 14 from air and pollutants by the tight fit of the release paper 10, allowing the adhesive backing to maintain its adhesion to the maximum extent before final use (i.e., before the release paper 10 is removed). At the same time, by extending and pasting the patch 14 to the edge of the first insulating member 12, the "patch 14-insulator gap" existing in the traditional structure is completely covered, avoiding possible contact between the top cover body 11 and the outside world. This fundamentally blocks the conductive path between the exposed aluminum area and the busbar caused by foreign metal objects (such as scattered metal wires), significantly reducing the risk of battery short circuit.

[0048] In some embodiments, such as Figure 2 , Figure 3 , Figure 6 as well as Figure 7 As shown, the patch 14 includes a patch body 143 and a skirt portion 141. The skirt portion 141 protrudes from the top cover body 11, and the release paper 10 is detachably connected to the adhesive side of the patch body 143 and the skirt portion 141. When the patch body 143 is applied, it can better fit the edges of the top cover body 11 and the first insulating member 12.

[0049] After the release paper 10 is removed, the skirt portion 141, thanks to the adhesive of its backing, can be firmly attached to the edge of the first insulator 12, further enhancing the coverage effect of the patch body 143 on the "patch body 143-insulator gap," ensuring that this area is completely sealed and effectively blocking the intrusion path of metallic foreign objects, thereby greatly reducing the risk of battery short circuit. The adhesion of the skirt portion 141 to the edge of the first insulator 12 is like adding an extra fixing point to the patch body 143, allowing the patch body 143 to be more firmly attached to the top cover body 11 during battery use. This helps resist the displacement and loosening that may occur under complex working conditions such as vibration and impact, ensuring the structural stability of the battery top cover assembly 1 and extending the battery's service life.

[0050] Furthermore, the release paper 10 is adapted to the adhesive side of the patch body 143 and the adhesive side of the skirt 141, employing a contour-following design. This contour-following design allows the release paper 10 to closely conform to the overall shape of the patch body 143. During the production, storage, and transportation of the patch 14, the release paper 10 effectively wraps the adhesive, preventing it from sticking or becoming contaminated by contact with external objects. When the release paper 10 is removed, its precise fit with the patch 14 ensures that the adhesive is fully exposed without any overflow. Overflow not only affects the appearance and cleanliness of the patch 14 but may also cause the adhesive to be pasted in non-designed locations, affecting the installation accuracy and sealing effect of the patch 14. Therefore, the contour-following release paper 10 effectively solves the overflow problem, improving the quality and reliability of the patch 14.

[0051] In some embodiments, such as Figure 2 , Figure 3 , Figures 6 to 8 As shown, the skirt portion 141 includes a first folded edge 1411 and a second folded edge 1412. The first folded edge 1411 and the second folded edge 1412 are set at an angle. The first folded edge 1411 is connected to the patch body 143 through the second folded edge 1412.

[0052] Specifically, the first folded edge 1411 is parallel to the horizontal side of the first insulating member 12, while the second folded edge 1412 is parallel to the vertical side of the first insulating member 12. In practical applications, the first folded edge 1411 is firmly attached to the edge of the first insulating member 12 opposite to the top cover body 11 using adhesive at the corresponding position, thereby establishing a reliable sealing barrier between the patch 14 and the first insulating member 12. This sealing effect helps prevent external moisture, dust, and other microparticles from entering the battery.

[0053] Meanwhile, a predetermined gap is formed between the second folded edge 1412 and the first insulating member 12. This gap not only facilitates actual installation but also provides a buffer space for thermal expansion and mechanical deformation that may occur during actual use. When the battery is under different operating temperatures and environmental conditions, the internal components of the battery may expand or contract to a certain extent. The gap between the second folded edge 1412 and the first insulating member 12 can accommodate such deformation, avoiding structural damage or performance degradation due to excessive compression or stretching between components.

[0054] In some embodiments, such as Figure 2 As shown, the release paper 10 has a tear handle 101 protruding from the outer edge of the patch 14 on at least one side. The operator can easily separate the release paper 10 from the patch 14 by gently hooking the tear handle 101 with their finger and then tearing it upward at a certain angle and with a certain force. This greatly improves the convenience and efficiency of the operation and reduces the time wasted and operational errors caused by the difficulty in removing the release paper 10.

[0055] It should be noted that the thickness of the release paper 10 is 0.05mm to 0.5mm.

[0056] Using a thinner release liner 10 (0.05 mm to 0.1 mm) generally provides better flexibility and adhesion, allowing it to closely conform to the shape of the patch 14, including structures such as the skirt 141 on the patch 14. However, a thinner release liner 10 may be more prone to breakage or tearing during operation, especially when removed on automated production lines. Excessive mechanical gripping force or improper operation may cause the release liner 10 to break, thereby affecting production efficiency and the bonding quality of the patch 14.

[0057] The thicker release paper 10 (0.3mm to 0.5mm) is relatively more robust and durable, with better mechanical strength. This makes it less prone to breakage during handling and better able to withstand mechanical gripping and pulling forces, making it suitable for use in highly automated production environments with high operational intensity. However, due to its thickness, it may result in slightly poorer adhesion to the patch 14.

[0058] The thickness of the release paper 10 is preferably 0.15 mm, which achieves a good balance between protective performance, ease of operation, and compatibility. The 0.15 mm thick release paper 10 has sufficient mechanical strength to remain intact in normal production operations, reducing the risk of breakage and tearing, while also having good flexibility and adhesion, which can better conform to the shape of the patch 14, including structures such as the skirt 141 on the patch 14, ensuring that the adhesive is effectively protected under the release paper 10. At the same time, it can be easily separated when peeled off, without damage to the patch 14 or residue of the release paper 10 due to excessive adhesion.

[0059] In some embodiments, such as Figures 2 to 5 As shown, an explosion-proof hole 112 is formed on the top cover body 11, penetrating the top cover body 11, and a vent hole 142 corresponding to the position of the explosion-proof hole 112 is formed on the patch 14. The battery top cover assembly 1 also includes an explosion-proof sheet 17 disposed in the explosion-proof hole 112.

[0060] In this embodiment, the explosion-proof hole 112 penetrates the top cover body 11 and is typically located in an area where the internal pressure of the battery may increase. The vent hole 142 on the patch 14 corresponds to the explosion-proof hole 112, ensuring that when the internal pressure of the battery abnormally increases, gas can be smoothly discharged to the outside of the battery through the vent hole 142.

[0061] The explosion-proof plate 17 is installed inside the explosion-proof hole 112 and is typically made of a material that can seal the explosion-proof hole 112 under normal conditions but can rupture when the pressure reaches a certain threshold. When the internal pressure of the battery rises abnormally due to a malfunction or other reasons, the explosion-proof plate 17 will rupture, allowing internal gas to escape through the explosion-proof hole 112 and the vent 142, thereby releasing pressure and preventing the battery from exploding due to excessive internal pressure. This not only improves battery safety but also effectively extends the battery's lifespan.

[0062] Meanwhile, the vent 142 ensures smooth gas exchange within the battery under normal operating conditions, helping to maintain internal pressure balance and preventing battery bulging or other structural damage caused by pressure changes. Through this multi-layered ventilated and explosion-proof design, the battery top cover assembly 1 enhances the overall performance and reliability of the battery while ensuring safety.

[0063] Furthermore, the battery top cover assembly 11 also includes: an explosion-proof membrane 18; the explosion-proof membrane 18 is disposed at one end outside the explosion-proof hole 112, and the explosion-proof sheet 17 is disposed at one end inside the explosion-proof hole 112, with an explosion-proof cavity formed between the explosion-proof sheet 17 and the explosion-proof membrane 18.

[0064] In this embodiment, the explosion-proof membrane 18 prevents foreign objects from puncturing the explosion-proof sheet 17. Simultaneously, the explosion-proof membrane 18 also prevents foreign objects, dust, etc., from entering the explosion-proof hole 112, thus enhancing the explosion-proof capability. When the explosion-proof sheet 17 bursts, the presence of the explosion-proof cavity acts as a buffer, improving the battery's safety. The cooperation between the explosion-proof membrane 18 and the explosion-proof sheet 17 allows for rapid pressure relief when the internal pressure of the battery is too high, reducing the risk of explosion and improving battery safety.

[0065] In some embodiments, such as Figures 2 to 5 As shown, the top cover body 11 is provided with a terminal hole 111. Correspondingly, the first insulating member 12 is formed with a first through hole 121, which is opposite to the terminal hole 111. Similarly, the riveting block 13 is formed with a second through hole 131, which is also opposite to the terminal hole 111, so that the components can be arranged in a coherent spatial layout. The first insulating member 12 is formed with a first through hole 121 opposite to the terminal hole 111, and the riveting block 13 is formed with a second through hole 131 opposite to the terminal hole 111; the battery top cover assembly 1 also includes a terminal 15. The terminal 15 passes through and is fixed in the second through hole 131, the terminal hole 111, and the first through hole 121 in sequence. Specifically, the terminal 15 first passes through the second through hole 131 of the riveting block 13, then through the terminal hole 111 of the top cover body 11, and finally through the first through hole 121 of the first insulating member 12, and is fixed at these positions.

[0066] The number of terminals 15 can be flexibly set according to the actual application requirements and design goals of the battery, which can better optimize battery performance. In some small batteries or batteries with low current output requirements, only one terminal 15 is needed to meet their functional requirements. The single terminal 15 design makes the structure of the battery top cover assembly 1 relatively simple, reducing the number of components and connection complexity. This not only reduces the production cost of the battery, but also improves production efficiency, making the battery more competitive in some cost-sensitive application areas (such as small electronic devices, toys, etc.).

[0067] In applications with high battery power requirements, such as electric vehicles and energy storage systems, multiple terminals 15 are typically required. Multiple terminals 15 can conduct current simultaneously, significantly increasing the battery's current output capability to meet the power demands of high-power devices. For example, in electric vehicles, the battery needs to provide strong power output in a short time; the multi-terminal 15 design ensures that the battery can efficiently transfer electrical energy to the motor, guaranteeing the vehicle's normal operation and performance.

[0068] In some embodiments, such as Figures 2 to 5As shown, the battery top cover assembly 1 also includes a sealing member 16, which is sleeved on the terminal post 15 and located between the terminal post 15 and the side wall of the first through hole 121, and / or between the terminal post 15 and the side wall of the terminal post hole 111.

[0069] Specifically, the sealing element 16 is tightly fitted onto the terminal post 15. When the terminal post 15 passes through and is fixed in the first through hole 121 of the first insulating element 12, the terminal post hole 111 of the top cover body 11, and the second through hole 131 of the riveting block 13, the sealing element 16 is located between the terminal post 15 and the side walls of these holes, forming an effective sealing barrier. The function of the sealing element 16 is to prevent external moisture, dust, gas, and other impurities from entering the battery through the gap between the terminal post 15 and the holes, and also to prevent electrolyte, gas, and other substances inside the battery from leaking into the external environment.

[0070] The seal 16 can be a sealing ring, typically made of elastic and chemically resistant materials such as rubber or silicone. This material choice allows the sealing ring to adapt to different operating environments and temperature conditions. For example, within the battery's operating temperature range, rubber sealing rings maintain good elasticity and sealing performance, ensuring isolation between the battery's interior and exterior. Furthermore, the shape and size of the sealing ring can be customized according to the dimensions of the terminal post 15 and the orifice to achieve optimal sealing performance.

[0071] This application also provides a battery, such as... Figures 2 to 9 As shown, the battery includes: a housing 2, a battery electrode assembly, and a battery top cover assembly 1. The battery electrode assembly is located inside the housing 2, and the battery top cover assembly 1 is fixed to the opening of the housing 2. The battery top cover assembly 1 includes a top cover body 11, a first insulating member 12, a riveting block 13, and a patch mechanism. The first insulating member 12 is connected to a first side of the top cover body 11; the riveting block 13 is connected to the side of the first insulating member 12 away from the top cover body 11; the patch mechanism includes a patch 14 and release paper 10. One side of the patch 14 is provided with adhesive, and the release paper 10 is detachably connected to the side of the patch 14 with adhesive. When the release paper 10 is removed from the patch 14, the patch 14 is adhered to the first side of the top cover body 11 by the adhesive, and the patch 14 extends and adheres to the edge of the first insulating member 12 to cover the gap between the first insulating member 12 and the top cover body 11.

[0072] Before patch 14 is used, release paper 10 effectively isolates the adhesive from moisture, oxygen, and various contaminants in the air. This allows the adhesive to maintain its original tackiness to the greatest extent possible before final use, i.e., before the release paper 10 is removed. During actual production, storage, and transportation, this characteristic ensures that patch 14 maintains good adhesion during installation, providing a reliable guarantee for subsequent sealing and insulation effects.

[0073] When the patch 14 needs to be installed, simply remove the release paper 10 from the patch 14. The patch 14 can then be firmly attached to the first side of the top cover body 11 by means of the adhesive backing. The patch 14 can extend and adhere to the edge of the first insulator 12, thereby completely covering the "patch 14-insulator gap" that exists in the conventional structure, and completely eliminating this potential safety hazard area that may cause a short circuit.

[0074] The battery provided by this utility model effectively isolates the adhesive backing of the patch 14 from air and pollutants by the tight fit of the release paper 10, allowing the adhesive backing to maintain its stickiness to the maximum extent before final use (i.e., before the release paper 10 is removed). At the same time, by extending and pasting the patch 14 to the edge of the first insulating member 12, the "patch 14-insulator gap" existing in the conventional structure is completely covered, avoiding possible contact between the top cover body 11 and the outside world. This fundamentally blocks the conductive path between the exposed aluminum area and the busbar caused by metal foreign objects (such as scattered metal wires), significantly reducing the risk of battery short circuit.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery top cover assembly, characterized in that, include: Top cover body; The first insulating element is connected to the first side of the top cover body; A riveting block is attached to the side of the first insulating member away from the top cover body; The patch assembly includes a patch and a release liner. One side of the patch has an adhesive backing, and the release liner is detachably attached to the side of the patch with the adhesive backing. When the release liner is removed from the patch, the patch is adhered to a first side of the top cover body by the adhesive backing, and the patch extends and is pasted to the edge of the first insulating member to cover the gap between the first insulating member and the top cover body.

2. The battery top cover assembly according to claim 1, characterized in that, The patch includes a patch body and a skirt portion connected to each other. The skirt portion protrudes from the top cover body. The release paper is adapted to the adhesive side of the patch body and the adhesive side of the skirt portion. The release paper is detachably connected to the adhesive side of the patch body and the skirt portion. When the release paper is removed from the patch body, the skirt portion is adhered to the edge of the first insulating member by the adhesive backing at the corresponding position.

3. The battery top cover assembly according to claim 2, characterized in that, The skirt portion includes a first folded edge and a second folded edge. The first folded edge and the second folded edge are set at an angle. The first folded edge is connected to the patch body through the second folded edge. The first folded edge is pasted to the edge of the first insulating member away from the top cover body by the backing adhesive at the corresponding position. The second folded edge is spaced apart from the first insulating member.

4. The battery top cover assembly according to claim 1, characterized in that, The release paper has a tear handle protruding from the outer edge of the patch on at least one side.

5. The battery top cover assembly according to claim 1, characterized in that, The thickness of the release paper is 0.05 mm to 0.5 mm.

6. The battery top cover assembly according to claim 1, characterized in that, An explosion-proof hole is formed on the top cover body, and a vent hole corresponding to the position of the explosion-proof hole is formed on the patch. The battery top cover assembly also includes an explosion-proof sheet disposed in the explosion-proof hole.

7. The battery top cover assembly according to claim 6, characterized in that, The battery top cover assembly also includes: an explosion-proof film; The explosion-proof membrane is disposed at one end outside the explosion-proof hole, and the explosion-proof sheet is disposed at one end inside the explosion-proof hole, forming an explosion-proof cavity between the explosion-proof sheet and the explosion-proof membrane.

8. The battery top cover assembly according to any one of claims 1-7, characterized in that, The top cover body is provided with pole hole, the first insulating member is formed with a first through hole opposite to the pole hole, and the riveting block is formed with a second through hole opposite to the pole hole; The battery top cover assembly further includes: a terminal post, which passes through and is fixed in sequence in the second through hole, the terminal post hole and the second through hole.

9. The battery top cover assembly according to claim 8, characterized in that, The battery top cover assembly also includes: A sealing element is fitted onto the pole post and located between the pole post and the side wall of the first through hole, and / or between the pole post and the side wall of the pole post hole.

10. A battery, characterized in that, include: The battery housing, battery electrode assembly, and battery top cover assembly as described in any one of claims 1-9, wherein the battery electrode assembly is located within the housing and the battery top cover assembly is fixed to an opening in the housing.

Images